Saturday, October 11, 2014

MN.06.10.1987. Superconductors & Lightning

Jonathan gets a tube of "on-air" radio toothpaste. China is being relayed by Swiss Radio International, some transmissions being well heard. We started to spot strong signals from Radio Beijing but not coming from Europe. Dave Rosenthal explains Electrometeors and why lightning can make shortwave radios suddenly insensitive. Carefully tuned outdoor antennas can "blow-up" the front end of a portable radio. In fact, the Sony ICF2001D was particularly suspectible. A lightning arrestor is a bit of a misnomer.
We review the RFB40L shortwave portable from Panasonic.
We also report on superconductor research displayed at Telecom 87 in Geneva by AT&T.